	
	/* 以下为实现0.5px底部边界 */
	.fineLine{position: relative;}
	.fineLine:before,
	.fineLine:after{position: absolute;content: " ";height: 1px;width: 100%;left: 0;transform-origin: 0 0;-webkit-transform-origin: 0 0;}
	/* .fineLine:before{顶部top: 0;background: #000;} */
	.fineLine:after{bottom: 0;border-bottom: 1px solid gainsboro;}
	@media only screen and (-webkit-min-device-pixel-ratio: 1.5){.fineLine:after,.fineLine:before{-webkit-transform: scaleY(.667);}}
	@media only screen and (-webkit-min-device-pixel-ratio: 2){.fineLine:after,.fineLine:before{-webkit-transform: scaleY(.5);}}
	/* 以上为实现0.5px底部边界 */